Explosive-engine.



No. 830,144. 4PATEN'IEI) SEPT. 4, 1906. H. A. PRANTZ.

EXPLOS-IVE ENGINE.

PPLIOATION FILED PEB. 21. 1905.

y 2 SHEETS--SKEET 1.

ANo. 830,144.

H. A. ERANTZ.

EXPLOSIVE ENGINE. APPLICATION FILED PEB. 21. 1905.

PATENTED SEPT. 4, 1906.

2 SHEETS-SHEET Z.

`lmaITn'n STATES HRAMA. FRANTZ, 0F CHERRYVILLE, PENNSYLVANIA.

E'XPLOSIVE-ENGINE.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application iiled February 21. 1905. Serial No. 246.652.

To all whom, ijlrw/,l/ concern:

Be it known that l, H1 RAM A. FRAN'IZ, a citizen of the United States, residing in Cherryville, Northampton county, Pennsylvania, have invented certain new and useful lmprovements in Explosive-Engines, of which the following is a specification.

My invention relates to that class of explosive-engines in which a liquid fuel, such as kerosene, is employed, and more particularly to an improved fuel-charging mechanism for such 'en ines adapted to operate in connection witiii separate reservoirs for storing, respectively, the regular charging fuel and a more volatile fuel, such as gasolene, which is u sed` mainly to facilitate starting of the engine.

The invention is fully described in connection with the accompanying drawings, and the novel features are specifically pointed out in the claims.

Figure 1 is a sectional elevation showing an explosive-engine of ordinary construction in the main,- having my improvements applied thereto in preferred form. Fig. 2 is an elevation, partly in section and Ato an .enlarged scale, taken at right angles to Fig. 1 and showing particularly the pump and 'feedpi e connections thereto from the reservoirs.

. he engine-cylinder 1 and crank-chamber 2 are mounted, as usual, on a base 3, which lattenis chambered to serve as an oil-reservoir. The piston 4 has its rod 5 connected to the crank 6 of the shaft 7, which latter-is mounted in suitable bearings 8 and provided with y-wheels 9'. The c linder 1 and cylinder-head 10are water-jac eted, as usual, the water-inlet being represented at 11 and the outlet at 12, while 13 indicates the exhaustoutlet from said cylinder", and 14 the air-inlet thereto communicating through a wall-conduit 15 with the crank-chamber 2. Air is admitted to the latter through the valve-controlled inlet 16 during the upward stroke of the piston and is compressed during thedownward stroke until Y the inlet-port 14 to the cylinder is opened, as indicated in the Fig.

1 position.

The pump-barrel 17, with its packing-head 18, is carried by an o en frame 19, secured to.

roller 27, mounted, as shown, upon a transverse pin A spring 29 is arranged to normally raise the plunger to a regulated h eight determined by an adjustable stop-lever 30, Fig. 2, pivoted to the fram e 1 9 at 31, as shown, and locked in adjusted position by an engaging quadrant 32. The roller end of the plunger extension is located below the engine.- shaft 7 adjacent to a cam-sleeve 33, feathered on said shaft and slidable thereon by the action of governor-arms 34 34, as indicated. The cam portieri 35 of this rotating sleeve is adapted to contact with the roller 27 below it when the cam-sleeve is in operating position upon the shaft, so as to depress the plunger at each revolution of the cam-sleeve, but whenever the sleeve is moved outward by the governor so as to clear the roller the pump action is automatically intermitted until the sleeve is returned to operating position' by the reduction in Speed of the engine.' -The edges 36 and 37 ofthe cam and roller, respectively, are beveled, as shown, so as to provide for their proper engagement or disengagement, as the case may be, when the cam-sleeve is in an intermediate position on the shaft.

As previously stated, the chambered base 3 is adapted to serve for storing the li uid fuel (kerosene) intended to be employed uring the ordinary operation of the engine. A separate reservoir 38 for gasolene is suitably sup orted .adjacent to the reservoir 3. The feedJ-outlet 38 from the latter is connected by suitable pi ing to the bottom head 39 of the pump andpthe gasolene-reservoir is connected intermediately at 40 to said piping,

suitable valve mechanism 41 and 42 being.

provided to cut off communication of either of the reservoirs, as desired, with the pump. IThe li uid fuel from either communicating reservoir is conveyed to the pum barrel, as shown, through a screen 43 am duplicate ball-valves 44 44 at each upward movement of the plunger, the amount so conveyed being determined by the extent of the said plunger movement, as determined by the ad- Justa lesto '30. Connected also tothe bottom pumplead 39 by a fitting 45, provided, as shown, with duplicate ball-valves 46 46, is the feed-pipe 47, extending therefrom to the engine-cylinder. At a oint in said ipe -or conduit 47 in line with t 1e cylinder-in et 14.1 provide a suitable valve mechanism, comprising a body 48, engaging said inlet-openmg and having a reduced nozzle 49 in the latter through which the liquid fuel may be discharged into said cylinder-inlet in connecfree E such free l valve 58 in the lfitting 52,.` the withdrawal ,of

tion with the air-sup ly to the latter through the air-conduit 15, a ready referred to. rIhis fuel-inlet is controlled by a plunger-valve 50,

l adapted to cut off the same when in the position indicated in Fig. l, and provided With a passa e-Way51, alined when Vin such position with t e conduit-pipe 47, so as to permit the assage of the fuel liquid to the extended con uit 47a, said Vplunger-valve being also Vadapted When Withdrawn from its seat to cut plssage thereby and o en communicationt ough its holloW en(A portion and the nozzle 49 into the cylinder-inlet 14.

The extended conduit-pi e 47al is carried vupward and connected to a tting 52, having a vertical bracket portion 53 tightly entered in the fuel-inlet 54, formed in the cylinderheadlO. i Suitable valves 55, 56, and 57'are' v -provided, as Shown, in the fitting 52 and ranches thereof, ada ted tobe opened by the pump-pressure an permit assage of the fuel liquid to said inlet, the va ves 56 and 57 being provided with springs adapted to normally seat them. In order to conveniently determine Whether or not the fuel li uid is being properly delivered, I provide a and- Which from its seat permits said fuel to discharge through a visible outlet 59. v

Theoperation has been clearly indicated .in connection with the detailed description already given. In starting the engine the' kerosene-reservoir 3 is cut olf, as described, from the pump and thega'solene is /fed to the latter and discharged through inlet 14 into the engine-cylinder together with air from the crank-chamber, the valve being properly set, as stated, While during the normal succeeding operation of the englnethe kerosene-reservolr is put into communcatior.: withA the pump, the gasolene-reservoir is cut off,'1the valve 50 is set to cut olf the inlet 14, and the-kerosene is fed,l as determined by the governor action andthe adjustable stroke of the pump,to the top inlet 54 and the4 vaporizer-plate 60; below the same, the air-su ly continuin l as before through the lower 1 et 14. It W1 l ofcourse be understood that the 'terms gasolene and kerosene are emtion.

seein ployed broadly, as indicating lirlixuid fuels of relatively high and loW vo tively and also thatl the preferred mechanism s Iecifically described may be 'readily modi ed Without departing from the inven- What I Claim is'- 1. I'n a gas-engine a charging mechanism.v

comprising separate reservoirs for gasolene and kerosene, a common pump with feedpipes to and from'the same, cut-olmeans for said reservoirs, separate inlets to the enginecylinder arranged in communication with the common feed-pipe thereto, and cut-0H means for said inlets, substantially as set forth.

2. In a gas-engine a charging mechanism Vcomprising separate reservoirs for gasolene common feed-pipe thereto, a separate airconduit to .one of said inlets, and a valve mechanism controlling the pump-discharge into the latter, substantially as set forth.

v' 4. In a gas-engine a charging mechanism comprising a pump for the charging' liquid, a top inlet to Jthe engine-cylinder for said charging liquid, a va orizerlate below said inlet, a nozzle in sai inlet wlthconduit connections to the pump, and valves in said con- 9o duit adapted to be opened bythe pump-pressure,substantiallyas set forth.

In testimony whereof I affixv my signature 4in the presence oftWo witnesses.

HlRAM A. FRANTZ.

vVVitneeses: H. H. Hownn, FRANK M.- FRACK.

a l1 lty, rcspec- 

